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Effects of deep vertical rotary tillage on dry matter accumulation and grain yield of summer maize in the Huang-Huai-Hai Plain of China

文献类型： 外文期刊

作者： Zhai, Lichao 1 ; Xu, Ping 1 ; Zhang, Zhengbin 1 ; Li, Shaokun 2 ; Xie, Ruizhi 2 ; Zhai, Lifang 3 ; Wei, Benhui 4 ;

作者机构： 1.Chinese Acad Sci, Ctr Agr Resources Res, Inst Genet & Dev Biol, 286 Huai zhong Rd, Shijiathuang 050021, Hebei Province, Peoples R China

2.Chinese Acad Agr Sci, Inst Crop Sci, Key Lab Crop Physiol & Ecol, Minist Agr, 12 Zhong Guan Cun South St, Beijing 100081, Peoples R China

3.Semi Arid Agr Sci & Technol Res Ctr China, 598 He Ping West Rd, Slujiazhuang 050051, Hebei Province, Peoples R China

4.Guangxi Acad Agr Sci, Cash Crops Res Inst, 174 Daxue East Rd, Nanning 530007, Guangxi Provinc, Peoples R China

关键词： Deep vertical rotary tillage;No-tillage with strip subsoiling;Dry matter accumulation;Grain yield;Maize

期刊名称：SOIL & TILLAGE RESEARCH （ 影响因子：5.374； 五年影响因子：6.368 ）

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收录情况： SCI

摘要： No -tillage of summer maize after the harvest of winter wheat is the main agricultural practice on the Huang Huai -Hai (HHH) Plain of China. However, long-term no -tillage in the absence of deep tillage practices affects soil properties, and this effect is not beneficial for the growth and yield production of summer maize. Field experiments were conducted in 2016 in two agricultural sub -zones (Luancheng and Guoyang) in the HHH Plain. The main objective of this study was to evaluate the effect of deep vertical rotary tillage (DVRT), compared to no -tillage with strip subsoiling (NTSS), on dry matter accumulation (DMA) and yield formation. DVRT significantly reduced the soil bulk density of the top soil layer (0-40 cm), especially for the lime concretion black soil in the Guoyang experimental site. Compared with NTSS, the soil water content in the 20-60 cm soil layer was increased under the condition of DVRT. DVRT also significantly increased root DMA in the 0-30 cm soil layer in Luancheng and in the 0-40 cm soil layer in Guoyang. The total shoot DMA, seed DMA, and harvest index of DVRT were significantly higher than those of NTSS, primarily due to a significant increase in postanthesis DMA. In addition, DVRT increased the maximum and mean grain filling rate and thus significantly increased the maximum grain weight at harvest. Compared with NTSS, DVRT significantly increased grain yield by 21.3% and 27.8% under the plant density of 6.75 pl M-2 and 9 pl m(-2), respectively, in Luancheng and it increased by 12.3% in Guoyang. The present results indicate that DVRT can be used as a deep tillage practice to improve soil properties and grain yield of summer maize, and this may provide guidance regarding the requirements to cope with a diversity of deep tillage machines and develop sustainable agriculture in the HHH Plain of China.

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